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Single-particle spectroscopy

Whispers of absorption

The combination of whispering-gallery-mode sensing with photothermal absorption spectroscopy promises significant advances in single-molecule identification.

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Figure 1: Absorption spectroscopy of plasmonic nanoparticles using a microtoroidal whispering gallery mode (WGM) resonator.

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Correspondence to Matthew R. Foreman.

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Foreman, M. Whispers of absorption. Nature Photon 10, 755–757 (2016). https://doi.org/10.1038/nphoton.2016.237

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